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The mast (derrick) type is generally classified as A type, K type, tower type and mast type etc.
A type mast, its leg section is rectangular or triangle shape, with better loading capacity and stability, connected with pins between sections, installed at low level and erected or lowered down integrally by drawworks and A-frame.
K type mast, namely front opening mast, its transverse section is a П shape truss structure, its both sides are composed of several pieces or segments, its back is rigid frame or pole system of truss, connected with pins or bolts between segments and members, may be installed at low level and erected or lowered down integrally by drawworks or hydraulic cylinder, has the advantages of convenient installation and teardown, excellent rigidity.
Conforming to API Spec 4F, marked with API
SPECIFICATIONAS:
Model |
JJ60/31-K |
JJ90/38-K |
JJ135/31-K |
JJ225/42-KS |
JJ225/42-K |
|
Max. static load kN |
600 |
900 |
1350 |
2250 |
2250 |
|
Effective height m |
31 |
38 |
31 |
42 |
42 |
|
Top span (front×side) m |
1.2×1.2 |
1.4×1.8 |
1.6×1.8 |
1.8×2 |
1.9×2 |
|
Bottom span m |
4.8 |
5.5 |
5.3 |
5 |
7 |
|
Height of racking board m |
17 |
24.5,25.5,26.5 |
17,17.5 |
25.5,26.5 |
24.5,25.5,26.5 |
|
Capacity of racking board m |
1000 |
1500 |
2000 |
4000 |
4000 |
|
Wind withstanding capacity |
Full setback and no hook load m/s |
36 |
36 |
36 |
36 |
36 |
No setback, no hook load m/s |
47.8 |
47.8 |
47.8 |
47.8 |
47.8 |
|
Mast erecting m/s |
≤8.3 |
≤8.3 |
≤8.3 |
≤8.3 |
≤8.3 |
|
Weight kg |
16000 |
27170 |
22000 |
24780 |
30000 |
|
Note:A--A type K--K type KS--K type, telescope |
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Model |
JJ225/43-K |
JJ315/45-K |
JJ315/45-K |
JJ315/45-K |
JJ170/41-A |
|
Max. static load kN |
2250 |
3150 |
3150 |
3150 |
1700 |
|
Effective height m |
43 |
45 |
45 |
45 |
41 |
|
Top span (front×side) m |
1.9×2 |
2.3×2.3 |
2.1×2.05 |
2.1×2.05 |
1.7×2 |
|
Bottom span m |
8 |
8.3 |
9.11 |
8 |
7.5 |
|
Height of racking board m |
24.5,25.5,26.5 |
24.5,25.5,26.5 |
24.5,25.5,26.5 |
24.5,25.5,26.5 |
24.5,25.5,26.5 |
|
Capacity of racking board m |
4000 |
5000 |
5000 |
5000 |
3000 |
|
Wind withstanding capacity |
Full setback and no hook load m/s |
36 |
36 |
36 |
36 |
36 |
No setback, no hook load m/s |
47.8 |
47.8 |
47.8 |
47.8 |
47.8 |
|
Mast erecting m/s |
≤8.3 |
≤8.3 |
≤8.3 |
≤8.3 |
≤8.3 |
|
Weight kg |
43180 |
68000 |
57360 |
60600 |
37900 |
|
Note:A--A type K--K type KS--K type, telescope |
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Model |
JJ450/45-K |
JJ450/45-K |
JJ450/45-K |
JJ450/45-K |
HXJJ135/33-KS |
|
Max. static load kN |
4500 |
4500 |
4500 |
4500 |
1350 |
|
Effective height m |
45 |
45.5 |
45 |
45 |
33 |
|
Top span (front×side) m |
2.2×2.2 |
2.5×2.3 |
2.2×2.2 |
2.5×2.2 |
1.8×1.65 |
|
Bottom span m |
9.11 |
8.3 |
9 |
10 |
4×4.7 |
|
Height of racking board m |
24.5,25.5,26.5 |
24.5,25.5,26.5 |
24.5,25.5,26.5 |
24.5,25.5,26.5 |
16,16.5,17.5 |
|
Capacity of racking board m |
7000 |
7000 |
7000 |
7000 |
2000 |
|
Wind withstanding capacity |
Full setback and no hook load m/s |
36 |
36 |
36 |
36 |
36 |
No setback, no hook load m/s |
47.8 |
47.8 |
47.8 |
47.8 |
47.8 |
|
Mast erecting m/s |
≤8.3 |
≤8.3 |
≤8.3 |
≤8.3 |
≤8.3 |
|
Weight kg |
62400 |
91200 |
75350 |
104780 |
31500 |
|
Note:A--A type K--K type KS--K type, telescope |
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